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Martensitic high‐nitrogen steels
Steel Research, 1992Interstitial nitrogen considerably improves the corrosion resistance of low‐tempered martensitic stainless steels. It may be introduced into the bulk by pressure melting or powder metallurgy and into a surface layer by case hardening. The new high‐nitrogen steels (HNS) are suitable for stainless tools and bearings.High‐tempered HNS are outstanding due ...
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Optimal microstructures for martensitic steels
Journal of Materials Research, 2012Abstract
Shanthraj, P., Zikry, M. A.
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Heat-resistant martensitic steel Kh12NMFB
Metal Science and Heat Treatment, 19781. Martensitic stainless steel Kh12NMFB (EP609) with good weldability is intended for machine parts and apparatus for prolonged operation at temperatures up to 600°. 2. Two heat treatments have been developed for steel Kh12NMFB-hardening from 1000–1050° and tempering at 650° (σb ≥ 90 kgf/mm2) hardening from 1000–1050° and tempering at ...
M. F. alekseenko +2 more
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2015
Sheet martensitic steels for automotive application are presented including as-annealed martensitic grades, as-hot-rolled grades, and grades where martensitic structure is obtained after quenching in cooled dies (press-hardened martensitic steels). New developments of ultrahigh strength as-annealed and press-hardened steels with tensile strength up to ...
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Sheet martensitic steels for automotive application are presented including as-annealed martensitic grades, as-hot-rolled grades, and grades where martensitic structure is obtained after quenching in cooled dies (press-hardened martensitic steels). New developments of ultrahigh strength as-annealed and press-hardened steels with tensile strength up to ...
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Activation Response of Martensitic Steels
Journal of Fusion Energy, 1997A hypothetical martensitic steel has been compositionally designed in order to optimize both metallurgical and reduced activation properties. When compared with two other martensitic steels, its activation characteristics are shown to be superior for all activation indices examined. However, these excellent properties are found to be due to the assumed
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Butterfly martensite in industrial steels
Metallography, 1987Abstract The morphology and the conditions of formation of butterfly martensite observed in carbon tool steels, low-alloy tool steels and bearing steels have been investigated. The results indicated that the butterfly martensite in various steels in three dimensional space can be classified into two types: i.e., the butterfly martensite with tails ...
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Nanostructured martensite–austenite dual phase steels
Materials Science and Technology, 2012Nanostructured martensite–austenite microstructure was achieved by a quenching–partitioning–tempering (Q–P–T) treatment of high carbon low temperature bainitic steel. Microstructure observations showed that the nanostructured steel consisted of fine martensite (about 25 nm in thickness), retained austenite and carbides.
F Hu, K M Wu, R D K Misra
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Abstract Martensitic (MS) steel is produced by quenching carbon steel from the austenitic phase into martensite. This chapter presents the compositions, microstructures, processing, deformation mechanism, mechanical properties, hot forming process, and attributes of MS steels.
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Residual austenite in martensitic stainless steels
Metal Science and Heat Treatment, 19651. Martensitic chromium-nickel stainless steels quenched and then tempered at a low temperature contain a considerable amount of austenite which is transformed into martensite on cooling to −70°C. 2. The amount of residual austenite in these steels increases (up to 40–50%) if the steels are tempered at 350°C after quenching in warm oil ...
L. N. Belyakov, V. I. Kozlovskaya
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1988
According to Gysel, Gerber and Trautwein [369] the relatively poor weldability of chromium stainless steels, their cold cracking sensitivity and the often unsatisfactory mechanical properties obtained from welded joints led at the end of the fifties to the development of low carbon martensitic chromium-nickel steels.
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According to Gysel, Gerber and Trautwein [369] the relatively poor weldability of chromium stainless steels, their cold cracking sensitivity and the often unsatisfactory mechanical properties obtained from welded joints led at the end of the fifties to the development of low carbon martensitic chromium-nickel steels.
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